BACKING FLANGES

Backing flanges are used to couple a glass ends to a glass end or to a bellow. Backing flanges are made of
Cast iron and are used with Inserts.

Cat.Ref.

DN

D

D1

D2

PCD

n x dØ

L

L1

Type

CF1

25

92

43

51

70

3 x 9Ø

10

6

A

CF1.5

40

110

58

66

86

3 x 9Ø

10

6

A

CF2

50

120

70

81

98

3 x 9Ø

12

8

A

CF3

80

155

101

112

133

6 x 9Ø

12

8

A

CF4

100

200

134

148

178

6 x 9Ø

12

8

A

CF6

150

275

186

196

254

6 x 9Ø

15

8

A

CF9

225

350

260

282

310

8 x 11Ø

28

8

B

CF12

300

425

342

363

395

12 x 11Ø

34

8

B

CF16

400

525

467

476

495

12 x 12Ø

22

8

A

CF18

450

630

537

557

585

12 x 14Ø

37

8

B

CF24

600

755

643

690

710

12 x 14Ø

50

5

C

INSERTS

Split ring type inserts are used with backing flanges. These are made of Cast iron with asbestos lining.  New inserts made
of suitable composite rubber material are being introduced and are presently supplied for 25 and 150 DN size.

Cat.Ref.

DN

D

D1

L

Type

CN1

25

50

34

10

A

CN1.5

40

65

48

10

A

CN2

50

80

61

8

B

CN3

80

111

90

9

B

CN4

100

147

119

10

B

CN6

150

195

168

10

B

CN9

225

280

240

10

B

CN12

300

361

324

10

B

CN16

400

474

431

12

B

CN18

450

555

500

18

B

CN24

600

684

634

10

C